hey guys got a interesting question, shell oil has yet to get back to me on this one. My question to shell was how well does their 5w-40 syn oil compair to motorcrafts ci-4 plus 15w-40 oil interms of oil foaming/aeration/shearing, is it as good or better than fords own oil? I noticed on shells webpage that they do not have the Ford WSS-M2C171-D specification on their site. Does anyone here ever try both and see what the difference was between them?
I was told by my local dealer that only ford oil has the proper amount of anti-foaming agents in it in order to keep the engines injectors happy and have a optimum spray pattern which would intern keep full power to the engine when compared to other brands of oil on the market today.
any opinions/comments would be appriciated

 

We have 65,000 trouble free miles on our 2004 6.0 Powerstroke. We change the oil every 7,500 miles and have used Shell Rotella 5W-40 since the 9,000 mile mark.

 

Wow... a post right up my alley!!!!

I used Motorcraft 15W-40 sinice new through 58,000 miles with great results. I then switched to Rotella-Syn 5W-40 as I wanted better cold weather start-up protection, better high-heat turbo bearing protection and better fuel economy. If not for the cold weather needs, I would still probably be using Motorcraft or any other quality, name brand 15W-40 diesel oil.

I am not a big fan of switching from convential to synthetics eaxh season... so I just use Rotella-Syn year-round with good results. Rotella-Syn is approved in all Powerstrokes because it is CI4+ rated, which unless you drive a new 2008 6.4L truck... you can use without fail or harm. As long as it meets the minimum API oil rating for your model year truck.... you are good to go.

Your Ford dealer is just talking with no official Ford back-up or confirmation. Just use the brand of diesel rated (API certified) oil you want and enjoy. Ask him to put what he stated in writing on his dealership letterhead so you can ask Ford and Shell about it (he will not). Ford, Int'l or Shell have never published anything to anyone regarding what he told you!!!!

If you want to use 15W-40... I would recommend the new CJ4 oil spec oils that are out there... but I have chosen to stay with Rotella-Syn 5W-40 for the winter time and wait until they start selling their synthetic with this new rating sometime in 2007.

I have Blackstone oil reports showing all usage from 17,000 miles to current (86,000) miles. I even posted an Excel speadsheet in a prior post to let people look at it.... the link is below.

https://www.ford-trucks.com/forums/5...readsheet.html

Let me know if you have any questions....

Jeff

 

The BBC was on this like white on rice! 31 minute response time including typing. Dare I say..... En Fuego!

 

Great job Jeff!!! If you keep this up, Amsoil is going to be offering you a job!!!

 

I would like to know if 5w40 rotella syn.will be ok towing 90 degree plus temp.I;m using it now for cold temp.I would like to continue to use it all season if it will protect the engine.

 

Is Florida, Mississippi, Louisiana, Texas and Alabama in summer heat, hot enough for ya? If it was, your ok, it was what I ran in my 03 towing a 11K# toyhauler during the summer months. Never had an issue.

 

sounds good to me,I do live in west Tenn,towing 12800lbs

 

At operating temps... the 5W-40 works and protects just like a 15W-40 weight oil. The only difference is the chemistry to make it act like either a 5W or a 15W.

Different amounts of viscosity improves are used and needed... but in the end... they both protect like a 40 weight should.... and required by Ford.

 

White on rice

Foam on a beer

Diesel fuel on your hands

Black smoke and diesel tailpipe

Bush on Oil

Amsoil on black-magic marketing

Need I say more....

 

Yes said it all already Beach

 

Technically the oil doesn't have anything to do with the spray pattern of your nozzles. That's misinformation on your dealers part. It has lots to do with how the spool valves in your injectors operate and make them squirt the fuel into your engine, but nothing about the nozzle pattern. If you want optimum spray pattern then use diesel fuel treatment to keep your fuel system clean. If you want your injectors to function properly use a good grade of oil and change it regularly.

 

There are only 2 approved viscosity grade oils to use in current International diesel engines above 90 degrees, 5W-40 & 15W-40.

 

I was thinking about using the 5 w40 syn in my gas burners also.I've been using castroil syntec sinse they were new.The rotella is a little cheeper and saves the trouble buying two different kinds of oil.The problem I see is the weight 10w30 vs. 5w40?

 

The lower number is not a problem and the Rotella will flow easier in the winter. The question is the "upper end"... using a 40 weight instead of a 30 weight? You may loose a little fuel economy and depending on your vehicle it may or may not lube as well as the 40 weight may be thivk for certain bearing clearances.

I would use a quality 5W-30 convential or synthetic in your car and use what is required... and sleep well. The 5W will give you easier starts and flow when cold and you will get the 30 weight protection when at operating temps.